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Live forecasts update automatically; written guidance last reviewed 16 June 2026 by the True North Brief Weather Desk. Data from Environment and Climate Change Canada and other national met services via Open-Meteo.
Live data from Open-Meteo · updates automatically ·
According to the live forecast above, temperatures in Mississauga today will reach the mid-teens this afternoon under partly cloudy skies — a typical late-spring pattern with a light breeze from the northwest.
How does today compare to the hourly and extended outlook?
The weather in Mississauga hourly shows temperatures climbing from single digits this morning to the mid-teens by early afternoon, then cooling after sunset. The weather in Mississauga tomorrow will see similar highs, though clouds may thicken by evening. Looking further ahead, the weather mississauga 14 days and weather in Mississauga 10 days outlooks suggest a gradual warming trend, with daytime highs approaching 20 degrees by late week. For a longer view, the 21 day weather forecast Mississauga indicates a mix of sun and showers typical of transition season.
What about wind, precipitation, and long-range trends?
Winds are light, gusting below 20 km/h today. No precipitation is expected until late evening, so the chance of snowfall in mississauga today is nil. The weather in Mississauga 30 days outlook points to near-normal temperatures for June, with periodic rain systems. For the most granular view, the 21 day weather forecast Mississauga hourly breakdown is available through the live forecast above.
Will it rain in Mississauga today?
The live forecast above shows a 10% chance of precipitation before evening. A few isolated showers are possible overnight, so keep an umbrella handy if you’re out late.
What is the UV index expected to be?
UV index is forecast to reach a moderate 5 under partly cloudy skies. Sun protection is recommended during the midday hours, especially for prolonged outdoor activity.
How does this compare to the seasonal average?
Today’s high is within 2 degrees of the 30-year normal for late May in Mississauga. No major temperature departures are expected over the next several days.
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